Doctor Answers (1) on Mental issue
What stands out clearly from your question is your paranoia. It's good that you know that the doubts or the suspiciousness you have are unfounded and aren't based on real facts. So I suggets you to communicate with your parent about these thoughts and fears that you are having.
It is likely that they will dismiss them as something your are creating and you should ignore them. But don't.
What you need to do is consult with a Psychiatrist immediately and discuss these thoughts, fears, paranoia in detail. I want to be very upfront with you and want to warn you that these symptoms might be sign of a real and serious Psychiatric disorder.
So seek professional opinion at the earliest.